Loom.



N0. 660,44l. Patented 0st. 23, I900.

A. msmaen.

LOOM.

A lication filed Oct. 4, 1899.\

(No Model.) 2 Sheets-Sheet l.

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LUUM

No. 660,44i.

( A-ppliotion filed on. 4, 1899..)

2 Sheets-Sheet 2.

(No Model.)

UNITE STATES PATENT ()FFicE.

ALFRED INSINGER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR' TO THEINSINGER COMPANY, OF SAME PLACE.

- SPEGIFICATION forming part of Letters Patent No. 660,441, datedOctober 23, 1900.

Application filed October 4, 1899. Serial No. 732,525. on model.)

To all whom it may concern:

Be it known that I, ALFREDINSING-ER, a citizen of the United States,residing at Phila delphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and useful Improvementsin Looms;and

I do declare the following to be a full, clear, and exact description ofthe invention, such as will enableothers skilled in the art to which itappertains to make and use the same.

This invention relates to looms, and more particularly to that type oflooms wherein several distinct narrow fabrics are simultane ously woven;and the object of my invention is to provide means for actuating theshuttles in such manner that they will be start-ed through the shedpromptly on the formation thereof and under a constantly-acceleratedspeed until they approach the position of rest, when they will begradually stopped. Such movement is highly desirable in a narrowwareloom, where a large number of shuttles are employed and are constantlybeing reciprocated a short distance simultaneously through theirrespective sheds, as will be well understood. This objectlattain by themechanism hereinafter described, and definitely pointed out in theclaims. r In the drawings forming a part of this specification, Figure 1represents in side elevation so much of a narrow-ware loom as isnecessary to show my invention applied thereto. Fig. 2 is a fragmentaryend view of sufficient of the loom to illustrate my invention appliedthereto. Figs. 3 and at are enlarged details in side elevation andsection, respectively, showing my invention detached.

Those parts of the loom structure not directly associated with mypresentinvention.

such as the take-up and let-off beams, the.

heddles, and their operating meanshave been purposely omitted. from thedrawingsin order to avoid complication, and such parts of the loom areand maybeofany usual construction, as will be understood.

Mounted upon the main-frame A in a manner to permit reciprocation is thelay B, in the present instance shown as hung from the top of theloom-frame, as is common in this class of looms and Well understood bythose skilled in the'art, and said lay is or may be driven from thecrank-shaft 0 through any suitable or'usual connection, as the pitman D.Carried by the lay is the usual divided or sectional reed E, alternatingwith the reedspaces e'of which are the pinions e e, which, meshing-withsuitable racks or teeth on the shuttle S and with the rack-bar M, serveto move the shuttles S in their guideways s and through the shed of theadjacent warp when, ,the rack-bar is reciprocated, all as usual in thisclass of loom, which, therefore, need not be more fully described.

Suitably secured to the main frame A, as by means of the bracket b, armsI) b, and screws or pins 1) 17*, is the fixed eccentric disk F, on theperipheral ways ff of which is loosely mounted the drive-gear G, free toturn thereon. The crank-shaft- O which is driven from any suitablesource of power, passes through an eccentric perforation c in the fixeddisk F and has secured thereto an arm a,-slotted at a. Fixed to the gearG and projecting from theface thereof, so as to enter the slot of of thearm Ct, is the pin (1 whereby as the crank-shaft O is revolved motion isimparted to the gear G in a manner which will hereinafter more fullyappear.

Mounted-on the stud h,- secured to the main frame A below thecrank-shaft C, is the loose motion-transmitting gear H, which mesheswith and derives motionfrom the pinion G,

and carried by said gear H is the crank-arm 't', I

sponding pint and to said pins 1' and 71 are connected the straps m m,through which reciprocating motion is imparted to the rackbar foractuating the shuttles in a manner previously explained. The crank-arm iis preferably slotted at either end, as at i, Fig. 1, .to afi'ordanadjustable connection between the. straps m m and the arm, as indicatedin Fig. 1. In this case, also, it is necessary to form a slot 2". in thegear-H, so that both pins 11 and 2' may be moved a correspondingdistance from or toward the center of the gear, and thus give therack-bar M* its proper motion of reciprocation. From the pins '6 11 thestraps m m lead and are secured to pulleys or disks M M respectively,loosely mounted upon a stud or pin P, secured to the main frame of theloom. Fixedly connected to the pulleys or disks m m respectively, arecor- IOO responding pulleys or disks 111 m to which are connected oneend of the straps m m", respectively. One of these straps m passes overa guide-pulley m", Fig. 1, mounted on the lay, and its end is carriedinward along the lay and secured at m to the rack-bar M. The other ofthese straps m is passed around a similar guide-pulley m and its endcarried outward along the lay and secured to the rackbar M near its end,as at m. 'Ihusit will be seen that as the straps or and m arealternately reciprocated they impart to the rack-bar M a positive motionfirst in one direction and then in the other to thereby pass theshuttles through their respective sheds in each direction.

In the workingof this type of loom, wherein a large number of shuttlesare employed to be simultaneously moved through the sheds, it isdesirable that .such motion shall commence promptly as soon as the shedis formed that it shall be accelerated during the passing of theshuttles and until they approach their extreme positions,when it shouldbe gradually decreased to bring the shuttles to a state of rest. Thesedesirable objects are attained by the peculiar driving connectionsbetween the crank-shaft and the gear H, wherein the operation is asfollows: The position of parts as indicated by Figs. 1 and 2 shows theshuttles at rest and ready to begin their travel through the sheds. Itwill be noted that the slotted arm a is now in such position that thepin a on the pinion G is at the extreme end of the slot and that the arm'5 is in such position that the rack is at one extreme limit of itsmovement. The movement of the crank-shaft now imparts to the pinion Grapid peripheral movement, which is transmitted through the gear H tothe arm 2'. This rapid movement of arm '5 when in the position indicatedby Fig. 1 is desirable, for the reason that the arm is then in suchposition that only slight movement will be imparted to theshuttle-operating rack,

.and to secure prompt movement of the shuttles this position of the arm2' must be quickly passed. As the crank-shaft continues to revolve theeccentric relation between the shaft 0 and pinion G causes the pin a totravel in the slot at of arm' a, and a consequent decrease of motion isthus continuously imparted to the gear H and arm 'i as the latterapproaches its position of most effective motion transmission.(Indicated in Fig. 2.) Continued rotation of the shaft causes a reverseaction of the parts. The pin a travels toward the outer extremity of theslot at, and a gradual increase in the motion imparted to arm t' takesplace until the parts assume the original position. It will be notedthat the size of the pinion G is one-half of gear H. Therefore while theformer makes a complete revolution the latter makes only a half-turn,causing the ends of arm *5 to change position.

By the operation just described the shut tles have been promptly startedthrough their sheds, and while their motion has been aocelerated up totheir central positions and then gradually decreased it has yet beenrendered more uniform and devoid of injurious and abrupt changes, aswould be the case in the absence of my improvement.

I have described my invention as particularly applicable to theoperation of the shuttles in a narrow-ware loom, and I have found it ofgreat use in this connection; but I do not desire to limit myself tothat use alone, as it may be employed in other relations-as, forinstance, in the shedding-motions by the well-known dobby or jacquardmechanism, wherein the object is'to start to open the shed quick, andthen as the warps reach the position of greatest strain, as when theshed is nearly formed, to make the movement proportionately slow. Theadaptation of my device to these uses will be readily understood bythose skilled in the art, it being necessary only to connect the arm 71with the usual griffs of the jacquard or the knives of the dobby.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a narrow-fabric loom, the combination of a crank-shaft, a circularpinion mounted on a stationary bearing eccentric to the said shaft, acircular gear provided with twice the number of teeth as the said pinionand in mesh therewith, a slotted arm carried by said shaft, and a pinfast to the pinion and entering the slot, whereby the speed of the gearis successively increased and decreased twice during each revolutionthereof.

2. In a loom, the combination of the lay, the shuttle-operatin grack-bar mounted thereon and means for reciprocating said bar at avariable speed, comprising a crank-shaft, a pinion eccentric thereto, astationary bearing for said pinion, a pin-and-slot connection betweenthe pinion and shaft, a motion-transmitting gear in mesh with saidpinion, and connections between said gear and rack-bar.

In testimony whereof I aifix my signature in presence of two witnesses.I

ALFRED IN SINGER.

Witnesses:

D. W. HOLLOWAY, J. W; KENwoRTnY.

IIO

